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FAQs of Storage Products

The FAQs below contain answers to the most common questions regarding Toshiba's bare SSD, SSHD, and HDD. If you would like to find information about Toshiba's Consumer Storage Solutions such as external HDD, please check the global portal page and select the region to find the regional web page for such products.


  • What are Solid State Drives (SSDs)?

    SSDs are based on the use of semiconductor NAND flash memory technology (a non-volatile storage technology that does not require power to retain data) and are available in the same form factor, interface style and capacity size as the traditional HDDs that are based on the use of rotating media platter.

  • What are the advantages of SSD over HDD?

    Because SSDs have no mechanical moving parts, the performance of the device is restricted only by the electrical characteristics and the time to access the addressed data. This in turn is governed by the design overheads of the device and its addressing/mapping algorithms to the NAND flash memory. In contrast, data access performance in HDDs is determined by the quickness of movement of electromechanical components to position a read/write head over a defined area on a rotating disk. In addition, with SSDs having no moving parts, this enhances the ruggedness and tolerance to external environmental forces such as vibration/shock.

  • Are SSDs a direct replacement technology for HDDs?

    There is a definite market opportunity for the performance and reliability advantages of SSDs. However, we expect SSDs to coexist with HDDs for the future because there is a role for both storage technologies depending on the application environment and expectation. SSDs are seen as HDDs but much faster, providing fantastic IOPS (Input/output Operations Per Second) performance in comparison. It effectively emulates HDDs in terms of its responses and provides the same or greater specification interface to the host bus adaptor (HBA). In terms of error reporting the construct of SSDs differs to that of HDDs, and certain features and error processing will become redundant. But where possible, compatible error codes are emulated to maintain alignment with existing software tooling and support services. Furthermore, certain commands favor the design of HDDs as opposed to SSDs, so either these commands are rejected where not applicable or an emulated response is provided to satisfy device drivers and management software to avoid unnecessary system error logging where OSs do not reflect support for current device types. Current interface data rates are 6 Gbit*/s for SATA products, and 12 Gbit/s (Max.) for SAS products.

    In the end, Toshiba sees HDDs and SSDs as critical storage solutions with long term viability and attributes specific to different applications.

    *: A gigabit (Gbit) as 109 bits.

  • How long will SSDs last in comparison to HDDs?

    HDD longevity is determined by the wear of the mechanical components and its ability to maintain the highly accurate control associated with intricate movement. This can also be directly linked with the operational environment HDDs are expected to perform within, and this influence can act as an accelerator to drive degradation over time. The actual field life of HDDs can easily surpass its warranty period if the drive is installed and used in accordance with the manufacturer's design specifications and is independent of the number of write/read operations. Conversely, SSD technology does place a restriction on the number of write/erase cycles applied to each memory cell as these degrade over time and use. SSD specification generally states a total data capacity that can be written to SSDs before they are worn out and the management of cell life and the re-assignment of data are core technologies to SSDs.

  • What are the strong points of Toshiba's SSDs?

    Toshiba can provide the trustworthy product based on NAND control technology amassed as an inventor and a manufacturer of flash memory, and matured storage know-how accumulated as an experienced HDD manufacturer.

  • What form factors and capacity size are available?

    Generally, the form factor (FF) of SSDs has been designed to duplicate or enhance those offered by 2.5-inch HDDs. This is for pure compatibility reasons where the design specification of PC, array or server chassis dictates certain z-height maximums (x=width, y=length). This also applies to indirect mounting using a tray or hot-swap drive carrier. In addition to the 2.5-inch FF, the models in smaller FF are now available. Currently, Toshiba's SSD model designs offer 15mm, 9.5mm and 7mm z-height in 2.5-inch FF options to maintain direct HDD interchangeability, or in smaller mSATA and M.2 FF which are suitable for the smaller system design.

  • Can I mix SSDs and HDDs as RAID elements?

    SSDs can be applied to the same design applications as those currently involving HDDs. Where SSDs are used as the replacement devices for existing HDD installations to achieve improved performance, care should be taken to ensure that no system bottlenecks are likely to impede the expected performance increase due to legacy specification restrictions. Mixing HDDs and SSDs as RAID elements is unlikely to achieve the positive technology performance enhancements associated with SSDs, as the RAID controller and drive command completion times will be driven by the slowest element. In this case, if the application involves striping data, the HDD element will be the controlling factor on overall performance.

  • How much does SSD cost to buy?

    Please contact your Toshiba sales representative for pricing information.

  • What are SLC NAND flash Memory (NAND), MLC NAND, and TLC NAND? And what are the benefits for each of them?

    Single Level Cell (SLC) NAND list performance and memory cell longevity as positive design features, whereas capacity range and price ($ per GB) are generally regarded as the negative gating factors.

    Multi-Level Cell (MLC) and Triple-Level Cell (TLC) NAND list capacity range and price ($ per GB) as the positive design features, whereas memory cell longevity and performance are generally regarded as negative gating factors.

    Please also refer to the description about SSDs in "Trends & Technology" section.

  • What are the performance levels of MLC NAND flash memory (NAND) and/or TLC NAND as compared to SLC NAND?

    SLC NAND flash memory has the fastest transfer rate and lowest power consumption among these three types of NAND flash memory although MLC/TLC flash memories have the advantages to enable higher density than SLC NAND flash memory and provide more cost-effectiveness into SSD.

  • Where are Client SSDs and Enterprise SSDs commonly found in today's computing environments/applications?

    Client SSDs are mainly used in mobile computing devices such as tablets, laptops and camcorders. They also start to be introduced as read intensive SSDs in data center application.
    With the cost of Enterprise SSDs (eSSDs) still commanding a premium price, applications for this technology is growing but still niche in the number of applications which make the performance vs. cost and combining enterprise data reliability/integrity a prerequisite. In the enterprise sector, eSSDs form the pinnacle of performance storage and as such is regarded as Tier0 within the tiered storage system model. Extreme performance within transactional processing environments may drive the use of eSSDs as RAID elements, but this is still the exception rather than the norm. More commonly an eSSD device is used as a cache accelerator element fronting a storage array under the control of advanced file system and storage managers to provide uplift in overall HDDs based array storage performance.

  • Where can I buy Toshiba SSDs? What is the warranty system for Toshiba SSDs?

    As for the purchase, please refer to FAQ-Purchase.

    Regarding the warranty system, please refer to the section of "Warranty Support".

  • Is there any product which is affected by the vulnerability pointed out in a paper “Self-encrypting deception: weakness in the encryption of solid state drives (SSDs)”published in November 2018?

    From our internal investigation based on currently publicly available information, we have confirmed that the  products listed below do not have the security vulnerability described in the paper. We will let you know about a change in circumstances.
    For additional information, please contact the system vendor integrating these products.

    Products Enterprise SSD Data Center SSD Client SSD
    Interface NVMe SAS NVMe SATA NVMe SATA

    Enterprise SSD
    (1) NVMe Interface
    Model Number Capacity
    KCM5DVUG6T40 6,400GB
    KCM5DVUG3T20 3,200GB
    KCM5DVUG1T60 1,600GB
    KCM5DVUG800G 800GB
    KCM5FVUG6T40 6,400GB
    KCM5FVUG3T20 3,200GB
    KCM5FVUG1T60 1,600GB
    KCM5FVUG800G 800GB
    KCM5DRUG15T3 15,360GB
    KCM5DRUG7T68 7680GB
    KCM5DRUG3T84 3,840GB
    KCM5DRUG1T92 1,920GB
    KCM5DRUG960G 960GB
    KCM5FRUG15T3 15,360GB
    KCM5FRUG7T68 7,680GB
    KCM5FRUG3T84 3,840GB
    KCM5FRUG1T92 1,920GB
    KCM5FRUG960G 960GB
    KCM5DV4C6T40 6,400GB
    KCM5DV4C3T20 3,200GB
    KCM5DV4C1T60 1,600GB
    KCM5DV4C800G 800GB
    KCM5DR4C15T3 15,360GB
    KCM5DR4C7T68 7,680GB
    KCM5DR4C3T84 3,840GB
    KCM5DR4C1T92 1,920GB
    KCM5DR4C960G 960GB
    (2) SAS Interface
    Model Number Capacity
    KPM5VMUG3T20 3,200GB
    KPM5VMUG1T60 1,600GB
    KPM5VMUG800G 800GB
    KPM5VMUG400G 400GB
    KPM5WMUG3T20 3,200GB
    KPM5WMUG1T60 1,600GB
    KPM5WMUG800G 800GB
    KPM5WMUG400G 400GB
    KPM5VBUG3T20 3,200GB
    KPM5VBUG1T60 1,600GB
    KPM5VBUG800G 800GB
    KPM5VBUG400G 400GB
    KPM5WBUG3T20 3,200GB
    KPM5WBUG1T60 1,600GB
    KPM5WBUG800G 800GB
    KPM5WBUG400G 400GB
    KPM5VVUG6T40 6,400GB
    KPM5VVUG3T20 3,200GB
    KPM5VVUG1T60 1,600GB
    KPM5VVUG800G 800GB
    KPM5VVUG400G 400GB
    KPM5WVUG6T40 6,400GB
    KPM5WVUG3T20 3,200GB
    KPM5WVUG1T60 1,600GB
    KPM5WVUG800G 800GB
    KPM5WVUG400G 400GB
    KPM5VVUG7T68 7,680GB
    KPM5VVUG3T84 3,840GB
    KPM5VVUG1T92 1,920GB
    KPM5VVUG960G 960GB
    KPM5VVUG480G 480GB
    KPM5WVUG7T68 7,680GB
    KPM5WVUG3T84 3,840GB
    KPM5WVUG1T92 1,920GB
    KPM5WVUG960G 960GB
    KPM5WVUG480G 480GB
    KPM5VRUG15T3 1,5360GB
    KPM5VRUG7T68 7,680GB
    KPM5VRUG3T84 3,840GB
    KPM5VRUG1T92 1,920GB
    KPM5VRUG960G 960GB
    KPM5VRUG480G 480GB
    KPM5WRUG15T3 1,5360GB
    KPM5WRUG7T68 7,680GB
    KPM5WRUG3T84 3,840GB
    KPM5WRUG1T92 1,920GB
    KPM5WRUG960G 960GB
    KPM5WRUG480G 480GB
    PX05SHQ160 1,600GB
    PX05SHQ080 800GB
    PX05SHQ040 400GB
    PX05SHQ020 200GB
    PX05SHQ160B 1,600GB
    PX05SHQ080B 800GB
    PX05SHQ040B 400GB
    PX05SHQ020B 200GB
    PX05SMQ320 3,200GB
    PX05SMQ160 1,600GB
    PX05SMQ080 800GB
    PX05SMQ040 400GB
    PX05SMQ320B 3,200GB
    PX05SMQ160B 1,600GB
    PX05SMQ080B 800GB
    PX05SMQ040B 400GB
    PX05SVQ320 3,200GB
    PX05SVQ160 1,600GB
    PX05SVQ080 800GB
    PX05SVQ040 400GB
    PX05SVQ320B 3,200GB
    PX05SVQ160B 1,600GB
    PX05SVQ080B 800GB
    PX05SVQ040B 400GB
    PX05SVQ384 3,840GB
    PX05SVQ192 1,920GB
    PX05SVQ096 960GB
    PX05SVQ048 480GB
    PX05SVQ384B 3,840GB
    PX05SVQ192B 1,920GB
    PX05SVQ096B 960GB
    PX05SVQ048B 480GB
    PX05SRQ400 4,000GB
    PX05SRQ200 2,000GB
    PX05SRQ100 1,000GB
    PX05SRQ050 500GB
    PX05SRQ400B 4,000GB
    PX05SRQ200B 2,000GB
    PX05SRQ100B 1,000GB
    PX05SRQ050B 500GB
    PX05SRQ384 3,840GB
    PX05SRQ192 1,920GB
    PX05SRQ096 960GB
    PX05SRQ048 480GB
    PX05SRQ384B 3,840GB
    PX05SRQ192B 1,920GB
    PX05SRQ096B 960GB
    PX05SRQ048B 480GB
    PX05SCQ384 3,840GB
    PX05SCQ192 1,920GB
    PX05SCQ096 960GB
    PX05SCQ048 480GB
    PX05SCQ384B 3,840GB
    PX05SCQ192B 1,920GB
    PX05SCQ096B 960GB
    PX05SCQ048B 480GB
    PX05SCQ400 4,000GB
    PX05SCQ200 2,000GB
    PX05SCQ100 1,000GB
    PX05SCQ050 500GB
    PX05SCQ400B 4,000GB
    PX05SCQ200B 2,000GB
    PX05SCQ100B 1,000GB
    PX05SCQ050B 500GB
    PX05SLQ400 4,000GB
    PX05SLQ200 2,000GB
    PX05SLQ400B 4,000GB
    PX05SLQ200B 2,000GB
    PX04SHQ160 1,600GB
    PX04SHQ080 800GB
    PX04SHQ040 400GB
    PX04SHQ020 200GB
    PX04SHQ160B 1,600GB
    PX04SHQ080B 800GB
    PX04SHQ040B 400GB
    PX04SHQ020B 200GB
    PX04SMQ320 3,200GB
    PX04SMQ160 1,600GB
    PX04SMQ080 800GB
    PX04SMQ040 400GB
    PX04SMQ320B 3,200GB
    PX04SMQ160B 1,600GB
    PX04SMQ080B 800GB
    PX04SMQ040B 400GB
    PX04SVQ320 3,200GB
    PX04SVQ160 1,600GB
    PX04SVQ080 800GB
    PX04SVQ040 400GB
    PX04SVQ320B 3,200GB
    PX04SVQ160B 1,600GB
    PX04SVQ080B 800GB
    PX04SVQ040B 400GB
    PX04SVQ384 3,840GB
    PX04SVQ192 1,920GB
    PX04SVQ096 960GB
    PX04SVQ048 480GB
    PX04SVQ384B 3,840GB
    PX04SVQ192B 1,920GB
    PX04SVQ096B 960GB
    PX04SVQ048B 480GB
    PX04SRQ400 4,000GB
    PX04SRQ200 2,000GB
    PX04SRQ100 1,000GB
    PX04SRQ050 500GB
    PX04SRQ400B 4,000GB
    PX04SRQ200B 2,000GB
    PX04SRQ100B 1,000GB
    PX04SRQ050B 500GB
    PX04SRQ384 3,840GB
    PX04SRQ192 1,920GB
    PX04SRQ096 960GB
    PX04SRQ048 480GB
    PX04SRQ384B 3,840GB
    PX04SRQ192B 1,920GB
    PX04SRQ096B 960GB
    PX04SRQ048B 480GB
    PX04SCQ384 3,840GB
    PX04SCQ192 1,920GB
    PX04SCQ096 960GB
    PX04SCQ048 480GB
    PX04SCQ384B 3,840GB
    PX04SCQ192B 1,920GB
    PX04SCQ096B 960GB
    PX04SCQ048B 480GB
    PX04SCQ400 4,000GB
    PX04SCQ200 2,000GB
    PX04SCQ100 1,000GB
    PX04SCQ050 500GB
    PX04SCQ400B 4,000GB
    PX04SCQ200B 2,000GB
    PX04SCQ100B 1,000GB
    PX04SCQ050B 500GB
    PX04SLQ400 4,000GB
    PX04SLQ200 2,000GB
    Data Center SSD
    (1) NVMe Interface
    Model Number Capacity
    KCD5DLUG7T68 7,680GB
    KCD5DLUG3T84 3,840GB
    KCD5DLUG1T92 1,920GB
    KCD5DLUG960G 960GB
    KCD5FLUG7T68 7,680GB
    KCD5FLUG3T84 3,840GB
    KCD5FLUG1T92 1,920GB
    KCD5FLUG960G 960GB
    (2) SATA Interface
    Model Number Capacity
    THNSF81Q60CSE 1,600GB
    THNSF8800PCSE 800GB
    THNSF8400PCSE 400GB
    THNSF8200PCSE 200GB
    THNSF81Q92CSE 1,920GB
    THNSF8960PCSE 960GB
    THNSF8480PCSE 480GB
    THNSF8240PCSE 240GB
    THNSF8120PCSE 120GB
    Client SSD
    (1) NVMe Interface
    Model Number Capacity
    KXG6AZNV1T02 1,024GB
    KXG6AZNV512G 512GB
    KXG6AZNV256G 256GB
    KXG5APNV2T04 2,048GB
    KXG5APNV1T02 1,024GB
    KXG5AZNV1T02 1,024GB
    KXG5AZNV512G 512GB
    KXG5AZNV256G 256GB
    KBG3AZMS512G 512GB
    KBG3AZMS256G 256GB
    KBG3AZMS128G 128GB
    (2) SATA Interface
    Model Number Capacity
    KSG6AZSE1T02 1,024GB
    KSG6AZSE512G 512 GB
    KSG6AZSE256G 256GB
    KSG6AZM81T02 1,024GB
    KSG6AZMV512G 512 GB
    KSG6AZMV256G 256GB
    THNSFK1T02CS8 1,024GB
    THNSFK512GCS8 512GB
    THNSFK256GCS8 256GB
    THNSFK128GCS8 128GB
    THNSFK1T02DN8 1,028GB
    THNSFK512GVN8 512GB
    THNSFK256GVN8 256GB
    THNSFK128GVN8 128GB
    THNSFJ1T02CSY 1,024GB
    THNSFJ512G8NY 512GB
    THNSFJ256G8NY 256GB
    THNSFJ128G8NY 128GB
    THNSFJ512G8NU 512GB
    THNSFJ256G8NU 256GB
    THNSFJ128G8NU 128GB
    THNSFJ060G8NU 128GB

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